Could you please let me know if you are getting any specific error while importing the images.
In addition to Tanuj's question, please let us know the exact version of LR, your OS as well as the type of your camera.
I am getting an error message that says 'could not copy a file to the
My OS is windows 10 and I use a Nikon D3100
Please make sure that you have full access rights to all the folders needed by LR as well as to the target folder where the import needs to copy to.